Coupling or clutch for coaxial shafts



March 7, 1933. J, E 1,900,787

COUPLING OR CLUTCH FOR COAXIAL SHAFTS Filed June 19, 1931 In venfor:

JUST\N BAUGN f7 Fzz's azf'ar-nqs Patented 7,51 933 UNITED STATES yPATENT OFFICE roam Bananas, or DIIFEBDANGE, Luxmuao COUPLING- OR CLUTCH FOR COAXIAL SHAI'TS I Application m June 19, 1931', Serial No. 545,574, and in Germany April 1s, 1aso.

This invention relates to couplings or clutches for co-axial shafts, which enable the shafts to be coupled together in either direction of rotation without consideration to the fact as to which of the shafts constitutes the driving shaft, and which also, in the one'direction of rotation, permit of ad- Vance motion on the part of the driven shaft in relation to the driving shaft.

This object is accomplished by the use of a compound clutch, which comprises a one way clutch for the one direction of rotation and an electro-magnetic clutch for the 0pposite direction.

According to one form of embodiment of the invention, the hub of the one coupling element of the electro-magnetic clutch possesses the locking teeth on its outer periphery, while the casing. for the magnet coil v of the other coupling element carries on its inner periphery the pawls of the one-way clutch. When in aclutch of this description the one-way clutch, which is efl'ective'onl in 5 the one direction, is in operation, tl16dl1V811 shaft is capable of advance motion'in relation to the driving shaft, as in this direction the pawls are passed away over the teeth. If the driving and driven shaftsare exchanged, the one-way clutch operates in the reverse direction. r

The invention will now be described more fully with reference to the accompanying drawing, in which.

Fig. 1 is an elevational view of the clutch, partlyin section, and V Fig. 2 asection according to the line 2-2 of-Fig 1. 7 v V Re erring now to the drawing, the coaxial shafts d ande to be coupled are furm'shed with the oppositely disposed coupling portions 0 and f. v The artc carries the casing g for the coil- 1 o the electro magnetic clutch, while the part f carries the second coupling element h, about the outer 1 The inner peri ries by means 0 of WhlClI only one of the shaft d in periphery of which are the teeth I fl the p'awls i move against the end faces n of the teeth In this case, therefore, (i is the driving shafts .If on the other hand 6 is the driving shaft, the end faces n move against the pawls If rotation occurs in the direction of the arrow f2, the clutch runs idly. For the purpose of coupling in this direction of rotation, the coil 1 of the electromagnetic clutch is excited by current supplied through the medium of the leads m, m, forming a magnetic field which extends between the parts 9 and h and magnetically couples these parts.

The casing g is so formed that the same encloses the disc-shaped coupling member h and together therewith constitutes a chamber surrounding the coil Z and the one-way clutch in dust-proof fashion.

It will be understood that no restrictionis made to the specific form of embodiment shown, and that various modifications are quite possiblewithin the meaning of the above description and ;the annexed claims without departing from the spirit of the invention. I

What I claim as new and desire to secure by Letters Patent is: Y v 1. In a cpmpound clutch for co-axial shafts, a one-way clutch for the one direction of rotation, an electro-magnetic clutch for the opposite direction of rotation teeth on the-outer periphery of the one eiement' of the electro-magnetic clutch, a casing for the coil of the second coupling element of the electro-magnetic clutch, and pawls for the one-way clutch mounted on the inner periphery of the said casing.

2. A. compound clutch for connecting coaxial driving and driven shafts comprising a one-way clutch operating automatically to form apositive connection for one direction of rotation and an electro magnetic clutch operative to magnetically couple said shafts for operation in the opposite direction. 1

3. In a compound clutch for coaxial shafts comprising aone-way clutch operating auto matically to form a positive connection for One direction of rotation and an electro magnetic clutch operative to magnetically 6b couple said shafts for operation in the opposite direction of rotation, a disc-shaped coupling member on one of said shafts and a casing on the other of said shafts, said disc and casing forming part of the magnetic 6 circuit of said electro magnetic clutch and cooperating in forming a housing for said one-way clutch. .4. A. compound clutch for coaxial shafts com rising a one-way clutch operating auto- 10 matically to form a positive connection for rotation in one direction and an electro magnetic clutch for operation in the opposite direction, said electro magnetic clutch having a magnetic circuit comprising parts on 15 each of said shafts cooperating in forming ahousing for said one-way clutch. 5. In a compound clutch for coaxial shafts, a disc on one of said shafts, a casin "on the other of said shafts cooperating wit 20 said disc to form a housing, a coil in said housing for magnetizin said casing and disc to form a magnetic jutch and coo crating means in said housing operatin automatically to form a positive drive in one di- 25 rection ofrotation.

In testimony whereof I have signed my name to this speeifigatio Usi iN BAUGNEE. 

